Non-aqueous, rechargeable electrochemical cell

US5213914A · kind A · utility

Inventors

• Joachim Heitbaum · Bad Homburg vor der Höhe, DE
• Gunther Hambitzer · Remchingen, DE

Key dates

• Filing date: Feb 1, 1991
• Grant date: May 25, 1993
• Expiry date: Feb 1, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A non-aqueous rechargeable electrochemical cell is disclosed, wherein the cell includes a negative electrode a positive electrode and an electrolyte solution into which the electrodes are immersed. The negative electrode is made of lithium, and the positive electrode contains as the active material lithium cobalt oxide. The electrolyte solution is a solution of a lithium salt with an anion of a group 3A element halide in sulfur dioxide. The cell of the present invention has a long cycle life and excellent electrical characteristics.